Results 11 to 20 of about 6,093 (152)
Gongye shui chuli, 2022 二级出水中的氮、磷浓度虽较低，但污水排放量大，是造成水体富营养化的原因之一；且二级出水的碳氮比低，采用传统反硝化工艺无法达到脱氮除磷的需求。利用硫/铁硫化物自养反硝化深度处理污水是有必要的。阐述了自养反硝化菌利用硫/铁硫化物进行反硝化脱氮除磷的基本原理，以及反硝化菌用铁硫化物作电子供体的反应途径，论述了水力停留时间（HRT）、温度、pH对硫/铁硫化物自养反硝化过程的影响。研究表明：增加HRT可以提高硫/铁硫化物自养反硝化对氮、磷的去除率；反硝化菌群属于嗜温性菌，温度低于20 ℃明显抑制反硝化速率 ...
魏秋 +5 more
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Journal of Experimental Phonetics, 2021 Este artículo pretende ser una respuesta unificadora ante la falta de conexión entre los enfoques sincrónico y diacrónico basados en el alófono [ç] de /x/ en el español de Sudamérica. Se llevaron a cabo dos experimentos: un análisis acústico basado en habla de laboratorio, semidirigida y espontánea, y un experimento de percepción (tarea de ...
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Gongye shui chuli, 2020 将硫（Na2S、Na2S2O3、S0）作为电子供体引入人工湿地，考察HRT、pH及碳源对脱氮效果的影响，分析不同硫对反硝化过程的促进作用。结果表明，pH=7、NO3--N 40 mg/L、C/N=0时，含Na2S、Na2S2O3、S的人工湿地的脱氮效率分别比对照组高27.83%、9.56%、8.36%。碳源充足时，添加Na2S、Na2S2O3、S的人工湿地脱氮效率比对照组提升48.31%、26.08%、25.44%，说明硫自养-异养联合反硝化效果优于自养反硝化。
田海莹, 宋新山, 王宇晖
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Aeroacoustic differences between the Japanese fricatives [ɕ] and [ç] [PDF]
The Journal of the Acoustical Society of America, 2021 To elucidate the linguistic similarity between the alveolo-palatal sibilant [ɕ] and palatal non-sibilant [ç] in Japanese, the aeroacoustic differences between the two consonants were explored via experimentation with participants and analysis using simplified vocal tract models.
Tsukasa, Yoshinaga +2 more
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Shuitu Baochi Xuebao, 2007 在大田条件下，以强筋小麦豫麦34为供试材料，在330kg／hm^2（高氮）、240kg／hm^2（中氮）2个供氮水平下施用纯硫0，20，60，100／hm^2，研究了不同供氮条件下施硫对小麦光合特性及产量的影响。结果表明：在适宜的供氮水平下施硫对小麦氮同化的关键酶硝酸还原酶（NR）活性、叶绿素SPAD值、叶片可溶性蛋白、旗叶光合速率均有促进的影响，高氮条件下有随施硫量的增加NR活性、叶片中可溶性蛋白含量以及旗叶光合速率有减少的趋势。在2个供氮水平下施硫均对干物质积累量和籽粒产量影响效果明显 ...
朱云集 +5 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Metal nanoclusters provide abundant catalytically active sites and unique electronic structures that are highly beneficial for enhancing photocatalytic performance; however, their practical application is often hindered by poor photostability.
Yiying Qin +6 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang +6 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Lithium–sulfur (Li–S) batteries are promising for next‐generation high‐energy‐storage systems but are hindered by polysulfide shuttle, sluggish kinetics, and volume expansion. Conventional carbon hosts struggle to simultaneously anchor and convert polysulfides efficiently.
Ling Chen, Peng Xu, Jiaojing Shao
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Although alloy‐based materials present potential for peroxymonosulfate (PMS) activation, metal ion leaching remains severely restricted during the pollution degradation process. Herein, the porous carbon‐supported Fe–Cu alloy derived from industrial copper slag was prepared to remove the organic pollutants from wastewater while inhibiting the ...
Xuanren Chen +10 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Lithium–sulfur batteries have attracted extensive interest owing to their exceptionally high theoretical energy density and environmental benignity. However, their practical performance remains severely constrained by intrinsic challenges, including the polysulfide shuttle effect and large volume expansion during cycling, which markedly ...
Long Jiang +8 more
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